Baldwin, IA 52207 Frost Dates
52207, near Baldwin, IA: the frost window
Typically, the last spring freeze lands around 04/25, roughly 240 days out. Fall's first freeze usually shows up around 10/14, roughly 171 days after the last spring frost.
Baldwin sits in USDA Zone 5a (-20 to -15°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
Baldwin's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/25 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/11 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/09 and only about 1 year in 10 sees frost after that.
Baldwin against the rest of the dataset
About 171 days separate Baldwin's last and first frost, putting it 28,856 of 40,283 ZIP codes nationally. Within IA, it ranks 294 of 1,042.
Learn more
Two guides worth reading on 52207: local microclimates, on what one yard in Baldwin can differ from the 52207 normal, and zone vs. frost date, on why Zone 5a and Baldwin's frost date answer different questions.